Merge pull request #5 from colinkho/master

Implemented Structure For ChatLog Database
Adding new servlet
added new servlet

and appropriate parameters
redirect to servlet
Merge pull request #11 from taylorsw/master

Added AddRoom Servlet Functionality 

ReviewedBy: colinkho
Added ResponseParameters.java for error codes and responses. Added PostMessageServlet.java. Updated core files. Purpose for check-in: current collaboration with server team